Well, I have a question here about cortana waning to become a human to expand her life, or whatever, so here I go:

Ok, well, what cortana and gravemind might be talking about, is how the flood infect the human body and control the host, now imagine this, a ranger flood with the mind of cortana infects a human host, when it taps into the spine, the electric current holding the mind of cortana is sent up to the brain, along with the controling information, so then, wouldn't cortana be in a human host and be able to control it (this is one of my two theories)

now, my next one has to do with neural implants.

Lets just say, in theory, gravemind agreed to let cortana take over one of his flood, he would then put her in the neural implants, which would then link to the brain, with no other consious left, the flood would control the human, but if, like most of us speculate, gravemind has certain powers in the flood world, he tells the flood consiousness to leave, or whatever, then cortana would have a human body to inhabit and control, or is my probably wrong theory flawed somewhere?